Re: simple division

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От Martin Mueller
Тема Re: simple division
Дата
Msg-id 8B35EF9C-8DEF-4298-A646-89D1AC8F63E1@northwestern.edu
обсуждение исходный текст
Ответ на Re: simple division  ("David G. Johnston" <david.g.johnston@gmail.com>)
Ответы Re: simple division
Re: simple division
Re: simple division
Re: simple division
Список pgsql-general
I didn't formulate my question properly, because the query went like
 "select alldefects /wordcount" 
where alldefects and wordcount are integers.   But none of the different ways of putting the double colon seemed to
work.
 

The Postgres notation of this simple procedure is very unintuitive. I haven't been able to remember several times, and
mostpeople think of me as a person with a reasonably good memory. There is no obvious place in the documentation to
lookthis up.
 


On 12/4/18, 2:45 PM, "David G. Johnston" <david.g.johnston@gmail.com> wrote:

    On Tue, Dec 4, 2018 at 1:38 PM Joshua D. Drake <jd@commandprompt.com> wrote:
    > I may be misunderstanding the question but:
    Indeed...
    > select cast(x/y as numeric(10,4));
    
    Your answer is 2.0 instead of the correct 2.5 - you need to cast
    before the division, not after.
    
    David J.
    


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